Method and apparatus for transmitting data in RRC deactivated or activated state

Abstract

The present disclosure relates to a communication technique for combining a 5G communication system for supporting a higher data transmission rate than a 4G system with an IoT technology, and a system therefor. The present disclosure can be applied to 5G communication and IoT related technology-based intelligent services (e.g., smart homes, smart buildings, smart cities, smart cars or connected cars, health care, digital education, retail business, security and safety related services, etc.). Disclosed is a technology for adding uplink data to a radio resource control (RRC) connection request message corresponding to an RA response message and transmitting the same to a base station when the terminal is in an RRC deactivated state in a method for transmitting, by a terminal, uplink data in a wireless communication system.

The invention claimed is: 
     
       1. A method of transmitting uplink data by a user equipment (UE) in a wireless communication system, the method comprising:
 transmitting a random access (RA) preamble to a base station; 
 receiving an RA response message as a response to the RA preamble from the base station; 
 transmitting, to the base station, a radio resource control (RRC) resume request message including a UE identity, resume cause information and an authentication token; and 
 receiving, from the base station, an RRC message for suspending an RRC connection including information on deprioritization information, 
 wherein the RRC message for suspending the RRC connection further includes the UE identity, radio access network (RAN) discontinuous reception (DRX) cycle information, RAN notification area information, RAN periodic notification timer information, in case that a state of the UE is transited to an RRC inactive. 
 
     
     
       2. The method of  claim 1 , wherein the RRC message for suspending the RRC connection further includes wait timer information, in case that a state of the UE is transited to an RRC idle. 
     
     
       3. A method of receiving uplink data by a base station in a wireless communication system, the method comprising:
 receiving a random access (RA) preamble from a user equipment (UE); 
 transmitting an RA response message in response to the RA preamble to the UE; 
 receiving a radio resource control (RRC) resume request message including a UE identity, resume cause information and an authentication token from the UE; and 
 transmitting an RRC message for suspending an RRC connection including information on deprioritization information, 
 wherein the RRC message for suspending the RRC connection further includes the UE identity, radio access network (RAN) discontinuous reception (DRX) cycle information, RAN notification area information, RAN periodic notification timer information, in case that a state of the UE is transited to an RRC inactive. 
 
     
     
       4. The method of  claim 3 , wherein the RRC message for suspending the RRC connection further includes wait timer information, in case that a state of the UE is transited to an RRC idle. 
     
     
       5. A user equipment (UE) for transmitting uplink data in a wireless communication system, the UE comprising:
 a transceiver; and 
 a controller configured to:
 transmit a random access (RA) preamble to a base station, 
 receive an RA response message as a response to the RA preamble from the base station, 
 transmit, to the base station, a radio resource control (RRC) resume request message including a UE identity, resume cause information and an authentication token and 
 receive an RRC message for suspending an RRC connection including information on deprioritization information, 
 
 wherein the RRC message for suspending the RRC connection further includes the UE identity, radio access network (RAN) discontinuous reception (DRX) cycle information, RAN notification area information, RAN periodic notification timer information, in case that a state of the UE is transited to an RRC inactive. 
 
     
     
       6. The UE of  claim 5 , wherein the RRC message for suspending the RRC connection further includes wait timer information, in case that a state of the UE is transited to an RRC idle. 
     
     
       7. A base station for receiving uplink data in a wireless communication system, the base station comprising:
 a transceiver; and 
 a controller configured to:
 receive a random access (RA) preamble from a user equipment (UE), 
 transmit an RA response message in response to the RA preamble to the UE, 
 receive a radio resource control (RRC) resume request message including a UE identity, resume cause information and an authentication token from the UE, and 
 transmit an RRC message for suspending an RRC connection including information on deprioritization information, 
 
 wherein the RRC message for suspending the RRC connection further includes the UE identity, radio access network (RAN) discontinuous reception (DRX) cycle information, RAN notification area information, RAN periodic notification timer information, in case that a state of the UE is transited to an RRC inactive. 
 
     
     
       8. The base station of  claim 7 , wherein the RRC message for suspending the RRC connection further includes wait timer information, in case that a state of the UE is transited to an RRC idle.